bugfix #192: config with dtmf only followed later by gather with speech not working

lib/tasks/gather.js

@@ -262,8 +262,12 @@ class TaskGather extends Task {
     this._resolve('killed');
   }
 
-  updateTimeout(timeout) {
-    this.logger.info(`TaskGather:updateTimeout - updating timeout to ${timeout}`);
+  updateTaskInProgress(opts) {
+    if (!this.needsStt && opts.input.includes('speech')) {
+      this.logger.info('TaskGather:updateTaskInProgress - adding speech to a background gather');
+      return false; // this needs be handled by killing the background gather and starting a new one
+    }
+    const {timeout} = opts;
     this.timeout = timeout;
     this._startTimer();
   }